Views support the functionality of grouping, which allows the user to partition the collection in the collection view into logical groups. The groups can be explicit, where the user supplies a list of groups, or implicit, where the groups are generated dynamically depending on the data.

PropertyGroupDescription allows you to create implicit groups based on a PropertyName. If you simply want to group by a property you can set the PropertyName property. If you want to change the value that is eventually used for group you can use the Converter property to supply a value converter. For example, you may want to group items based on the first letter of a name. If the PropertyName property is not set, the item itself is passed to the value converter. The converter may return a collection, which indicates the items can appear in more than one group.

You can also define how string comparison should take place using the StringComparison property.